Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net Income Attributable to Merck & Co., Inc.	$ 4,745	$ 3,248	$ 1,591	$ 11,502

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details